发明授权
- 专利标题: Phenolic moulding compositions
- 专利标题(中): 酚醛成型组合物
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申请号: US349307申请日: 1989-05-09
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公开(公告)号: US5002994A公开(公告)日: 1991-03-26
- 发明人: Allan Lord , Kenneth Knight
- 申请人: Allan Lord , Kenneth Knight
- 申请人地址: GB2 Manchester GB2 Cheshire
- 专利权人: TBA Industrial Products Ltd.,Hepworth Minerals & Chemicals
- 当前专利权人: TBA Industrial Products Ltd.,Hepworth Minerals & Chemicals
- 当前专利权人地址: GB2 Manchester GB2 Cheshire
- 优先权: GBX8812512 19880526
- 主分类号: C08G8/10
- IPC分类号: C08G8/10 ; C08G16/02 ; C08K3/26 ; C08K7/14 ; C08L61/06
摘要:
A phenolic moulding composition in solid form, such as a dough moulding composition or sheet moulding composition, comprises a phenol formaldehyde novolak resin; a phenol formaldehyde resole resin as cross linking agent for the novolak resin; fibrous reinforcement; and non-fibrous particulate filler in an amount greater than the combined amount of the novolak and resole resins; the weight proportions of the ingredients being in the ranges______________________________________ phenolic resins 20-40% fibrous reinforcement 20-50% non-fibrous particulate filler 25-50% ______________________________________ Articles moulded from the compositions under heat and pressure have the flexural strength and impact strength required in certain precision parts for the automotive and engineering industries.
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